Defending champions Nathan Smith and Todd White ran off six birdies in a 10-hole stretch Monday and easily advanced to the round of 16 with a 6-and-5 victory in the U.S. Amateur Four-Ball.

Smith and White next play Drew Allenspach and Matthew Van Zandt, who made five straight birdies to break open a tight match and defeated Tom Hart and Jonathan Marisco, 5 and 4, on the West Course at Winged Foot.

The medalists from stroke-play qualifying, former Temple teammates Brandon Matthews and Patrick Ross, took the momentum from qualifying into a 4-and-3 victory.

Scott Harvey and Todd Mitchell, semifinalists last year at Olympic Club, won the last two holes to beat 15-year-old Sean Maruyama and 15-year-old Clay Seeber.